Definition of lying:

part of speech: noun

The habit or practice of telling lies.

part of speech: verb, impersonal

Reclining; being prostrate.

part of speech: adjective

Addicted to falsehoods; deceptive.

part of speech: noun

The practice of telling falsehoods.

part of speech: noun

Position of one who lies down.

part of speech: adjective

Telling falsehoods.